a) A Carnot engine operates between a hot reservoir at 355.0 K and a cold reservoir at 265.0 K. If it absorbs 510.0 J of heat per cycle at the hot reservoir, how much work per cycle does it deliver?
b) If the same engine, working in reverse, functions as a refrigerator between the same two reservoirs, how much work per cycle must be supplied to remove 920.0 J of heat from the cold reservoir?